Well when your fighting a guy who has the hammer 1 on 1, its alot easier as you can see its attack coming like alot of other weapons. I see this weapon more as a crowd control weapon. I still get caught in its attacks, very few times when fighting someone 1 0n 1 though, but when I have to deal with that guy and another enemy then it can be very troublesome, mainly with its stunlock.
All the things I have said about it being easy to avoid and not OP is when your fighting the person 1 on 1. But it isnt easy while its in a crowd, like some other weapons specials. I still dont say the weapon is OP, but it is a pain in the a** when you have to deal with that guy and other ppl at the same time.